Quasi-Phase Matching in Periodically Poled Polymer Films

In the Cerenkov-type SHG the fundamental wave is guided in thin film, while the harmonic wave is outcoupled into the substrate (Fig. 44). It requires that the refractive indices of fhe subsfrafe af a) and 2co frequencies and the effective 

Quasi-Phase Matching in Periodically Poled Polymer Films 

The structure of a periodically poled polymer is shown schematically in Fig. 45. By applying an alternatively directed poling DC field it is possible to create a structure 

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